/*
 * Copyright (C) 2018 Baidu, Inc. All Rights Reserved.
 */
package org.design.environmentprotection.manager;


import android.app.Activity;
import android.app.ActivityManager;
import android.content.Context;

import java.util.Stack;

/**
 * Created by naqiang on 2019/3/17.
 * app管理类
 */

public class AppManager {

    private static Stack<Activity> activityStack;
    private static AppManager instance;

    private AppManager() {
    }

    /**
     * 单一实例
     */
    public static AppManager getAppManager() {
        if (instance == null) {
            synchronized (AppManager.class) {
                if (instance == null) {
                    instance = new AppManager();
                }
            }
        }
        return instance;
    }

    /**
     * 添加Activity到堆栈
     */
    public void addActivity(Activity Activity) {
        if (activityStack == null) {
            activityStack = new Stack<android.app.Activity>();
        }
        activityStack.add(Activity);
    }

    /**
     * 获取当前Activity（堆栈中最后一个压入的）
     */
    public Activity currentActivity() {
        Activity Activity = activityStack.lastElement();
        return Activity;
    }

    /**
     * 结束当前Activity（堆栈中最后一个压入的）
     */
    public void finishActivity() {
        Activity activity = activityStack.lastElement();
        finishActivity(activity);
    }

    /**
     * 结束指定的Activity
     */
    public void finishActivity(Activity activity) {
        if (activity != null && activityStack != null) {
            activityStack.remove(activity);
            activity.finish();
            activity = null;
        }
    }

    /**
     * 结束指定类名的Activity
     */
    public void finishActivity(Class<?> cls) {
        for (Activity activity : activityStack) {
            if (activityStack.getClass().equals(cls)) {
                finishActivity(activity);
            }
        }
    }

    /**
     * 结束其他的Activity
     */
    public void finishOtherActivity(Activity activity) {
        for (int i = 0; i < activityStack.size(); i++) {
            if (null != activityStack.get(i) && activityStack.get(i) != activity) {
                activityStack.get(i).finish();
            }
        }
        activityStack.clear();
        System.exit(0);
    }

    /**
     * 结束所有Activity
     */
    public void finishAllActivity() {
        if (activityStack == null) {
            return;
        }
        for (int i = 0; i < activityStack.size(); i++) {
            if (null != activityStack.get(i)) {
                activityStack.get(i).finish();
            }
        }
        activityStack.clear();
        System.exit(0);
    }

    /**
     * 退出应用程序
     */
    @SuppressWarnings("deprecation")
    public void AppExit(Context context) {
        try {
            finishAllActivity();
            ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
            activityManager.restartPackage(context.getPackageName());
            System.exit(0);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}
